Definition of digital media

Digital media mainly refers to the carrier of recording, processing, disseminating and obtaining information in the form of binary numbers

Definition of digital media

Digital media is the digital content works, with modern network as the main communication carrier, through a perfect service system, distributed to the terminal and users for consumption.

Media classification

In the I.374 standard issued by ITU-T, the telecommunication standardization group of the International Telecommunication Union (ITU), media is divided into the following five categories.

(1) Perception media

Perception media refers to a type of media that directly acts on people’s senses to make people feel something. For example, speech, music, etc. that can produce auditory responses, images, videos, etc. that can produce visual response, and braille that can produce a tactile response.

(2) Presentation media

Presentation media is a type of media artificially constructed for processing, processing, storage and transmission of sensory media, such as audio encoding, which can digitize the audio signal and compress them into MP3 and other formats, image encoding, which can digitize images and compress them into JPEG and other formats, and video coding, which can digitize video information and compress it into MPEG and other formats.

(3) Display media

Display media refers to devices that acquire and display information. It contains two types of information input media and information output media. Common information input media include keyboard, mouse, scanner, etc. Output media include monitors, printers, speakers, etc.

(4) Storage media

Storage media is a physical medium used to store representation media containing CD, hard disk, USB disk and other devices that can be used to store various digital media data.

(5) Transmission media

Transmission media is the physical path between the transmitter and the receiver in the data transmission media system. For example, cable, optical fiber and other wired transmission channels, wireless transmission channels such as electromagnetic waves and satellite communications.